This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A354772 #15 Jun 26 2022 13:24:32 %S A354772 3,17,157,1193,1493,1511 %N A354772 For the imaginary quadratic field of discriminant -47, odd primes p such that the Iwasawa lambda invariant lambda_p exceeds 1. %C A354772 There are no further terms below 10^7. %H A354772 D. S. Dummit, D. Ford, H. Kisilevsky, and J. W. Sands, <a href="https://doi.org/10.1016/S0022-314X(05)80027-7">Computation of Iwasawa lambda invariants for imaginary quadratic fields</a>, Journal of number theory, 37(1) (1991), 100-121. See Table 1 page 116. %Y A354772 Cf. A239902. %K A354772 nonn,more %O A354772 1,1 %A A354772 _N. J. A. Sloane_, Jun 26 2022